The solar feed-in tariff in South Australia in 2026 typically sits between 2 and 8 cents per kilowatt-hour, depending on your retailer and plan, with a handful of conditional offers paying more. That is a long way from the 44c per kWh some South Australians locked in a decade ago, and it changes how a solar system pays for itself. This guide explains what the feed-in tariff is, why it has fallen, what the new export charges mean, and how Adelaide households can still get the most value out of every kilowatt-hour their roof produces.
What Is a Solar Feed-in Tariff?
A solar feed-in tariff (often shortened to FiT) is the credit your electricity retailer pays you for each kilowatt-hour of solar electricity your system sends back into the grid. It appears on your bill as a credit line, offsetting the cost of the electricity you draw from the grid at night or on cloudy days.
It is important to understand what the feed-in tariff is not. It is not a government payment, and in South Australia there is no longer a legislated minimum rate. Since the Essential Services Commission of South Australia (ESCOSA) stopped setting a minimum retailer feed-in tariff, each retailer sets its own rate. That is why two neighbours in the same Adelaide suburb with identical solar systems can be paid very different amounts for the same exported electricity.
Solar Feed-in Tariff Rates in South Australia in 2026
Feed-in tariffs change frequently and vary by plan, so treat the figures below as a guide to the market rather than a quote. Always check the current rate on your retailer’s Energy Price Fact Sheet before switching.
| Type of plan | Typical SA feed-in tariff (2026) | What to watch for |
|---|---|---|
| Standard market offer | 2c to 5c per kWh | Often paired with the cheapest usage rates. Fine if you export little. |
| Mid-range solar plan | 5c to 8c per kWh | Usually a slightly higher usage rate. Good balance for typical 6.6kW homes. |
| Premium or conditional solar plan | 8c to 12c+ per kWh | Higher rate often applies only to the first 5 to 15 kWh exported per day, or requires a battery, bundled gas, or a higher daily supply charge. |
| Time-varying feed-in tariff | 0c to 15c+ depending on time of day | Pays very little (sometimes nothing) for midday exports and much more for exports between roughly 4pm and 9pm. Only valuable with a battery. |
| Legacy premium scheme (closed) | 44c per kWh | The original SA scheme closed to new entrants years ago. Existing recipients keep it until the scheme ends, provided the system is not upgraded or moved. |
The key takeaway: on most plans, the electricity you export is worth roughly one-fifth to one-tenth of what you pay to import it. With South Australian retail rates sitting at around 38c per kWh, a kilowatt-hour you use yourself is worth around 38c, while the same kilowatt-hour exported is worth perhaps 5c. That gap drives every recommendation in this guide.
Why Did Feed-in Tariffs Fall So Far in SA?
South Australia has one of the highest rates of rooftop solar in the world. On a clear spring day, rooftop solar can supply the entire state’s demand and more for hours at a time. That is an extraordinary achievement, but it creates a simple supply-and-demand problem: when hundreds of thousands of systems all export at midday, there is far more solar electricity on the grid than anyone needs.
- Wholesale prices collapse at midday. The wholesale price of electricity in SA regularly drops to zero or below zero in the middle of the day. Retailers cannot pay you 20c for something they can only sell for 0c.
- The evening peak is where the value is. Demand climbs sharply from around 4pm as people arrive home, while solar output falls away. Electricity in that window is expensive. Solar exported at 1pm does nothing to help with the 7pm peak.
- Network costs of hosting exports. SA Power Networks has to manage voltage rise and congestion caused by so many exporting systems, which is the reasoning behind the newer export charging arrangements described below.
- Retailers compete on usage rates, not feed-in. Most customers compare the price they pay, not the price they are paid, so retailers put their sharpest pricing on usage rates and treat the feed-in tariff as a secondary lever.
The “Sun Tax”: Export Charges in South Australia
Alongside falling feed-in tariffs, South Australia has moved toward two-way network tariffs, widely nicknamed the “sun tax”. Under these arrangements, SA Power Networks can charge a small amount for solar exported during the midday oversupply window and reward exports during the evening. Whether you actually see this on your bill depends on how your retailer chooses to pass it through.
Three things are worth knowing about how this works in practice:
- There is normally a free export threshold each day, so a typical household exporting modest amounts may pay nothing at all.
- The charge is small per kilowatt-hour and applies only to exports in the defined midday window, not to the electricity you use yourself.
- It flips the logic of solar ownership: the goal is no longer to export as much as possible, but to use as much of your own generation as possible and, ideally, shift exports into the evening.
If you would like the full picture of how the sun tax interacts with payback timelines, our guide to the real solar payback period in South Australia walks through the numbers for a typical Adelaide home.
How Do I Find Out What Feed-in Tariff I Am Getting?
Most people have never looked. Here is the two-minute check:
- Open your most recent electricity bill and find the line labelled “solar feed-in”, “solar export”, or “FiT credit”. The rate is usually shown in cents per kWh next to the kilowatt-hours exported.
- Compare that rate to your usage rate on the same bill. If you are paying 38c and being paid 3c, you are on a low-feed-in plan.
- Check the government’s Energy Made Easy comparison site for your postcode. Filter for solar plans and sort by feed-in tariff, but read the conditions: a headline 10c rate that only applies to the first 8 kWh per day may be worth less than a flat 6c.
- Look at your export volume, not just the rate. A 6.6kW system in Adelaide typically exports 8 to 15 kWh on a sunny day. At that volume, a 3c difference in feed-in tariff is worth roughly $100 to $160 a year. Meaningful, but usually less than the difference between two usage rates.
7 Ways to Earn More From Your Solar in 2026
With export credits this low, chasing a slightly better feed-in tariff is the least effective thing you can do. These strategies, roughly in order of impact, make a much bigger difference.
1. Use your own solar first (self-consumption)
Every kilowatt-hour you consume directly from your panels saves you the full retail rate of around 38c. Every kilowatt-hour you export earns around 5c. Shifting just 5 kWh a day from export to self-use is worth roughly $600 a year. Run the dishwasher, washing machine, pool pump and hot water during daylight hours wherever you can. Many modern appliances have a delay-start function that makes this effortless.
2. Add a home battery
A battery is the single most effective response to low feed-in tariffs. Instead of exporting midday solar for 5c, you store it and use it at 7pm when grid power costs 38c or more. With the federal Cheaper Home Batteries Program and the SA Home Battery Scheme both available in 2026, the economics of storage in South Australia have never been stronger. Our battery rebate guide for South Australia covers eligibility, and our 15kWh solar battery for Adelaide homes page explains what a typical household can expect to store overnight.
3. Divert surplus solar into hot water
Hot water is often a household’s largest single energy load. A solar diverter sends excess solar into your electric hot water system rather than to the grid, effectively turning your tank into a cheap thermal battery. Heat pump hot water systems achieve the same effect with even less electricity, and are well suited to Adelaide’s climate.
4. Charge an electric vehicle from your roof
If you own or are considering an EV, daytime charging from solar turns 5c exports into transport worth many times that. A smart charger that only draws from surplus solar makes this automatic. We cover system sizing for EV owners in our guide to EV charging with solar panels in South Australia.
5. Consider a Virtual Power Plant (VPP)
If you have a battery, joining a VPP lets a retailer or operator draw on your stored energy during grid peaks and pay you for it, usually at a rate far above the standard feed-in tariff. South Australia has the most developed VPP market in the country. The trade-off is that the operator controls part of your battery at certain times, so read the terms carefully.
6. Switch to a time-varying feed-in tariff, but only with storage
Some retailers now pay next to nothing for midday exports and considerably more for evening exports. Without a battery this is a bad deal, because you have nothing to export in the evening. With a battery configured to discharge to the grid after 4pm, it can be one of the highest-earning plans available.
7. Then, and only then, shop the feed-in tariff
Once you have minimised exports, compare plans on the total annual cost using your actual import and export figures, not on the feed-in tariff alone. A retailer offering 10c feed-in but a 3c higher usage rate will cost most households more, not less.
Feed-in Tariff vs Battery: A Worked Example for Adelaide
Consider a typical Adelaide household with a 6.6kW system generating around 26 kWh on an average day, using 10 kWh of that directly and exporting 16 kWh.
| Scenario | Daily exports | Export value (at 5c) | Evening grid use avoided | Approximate annual benefit |
|---|---|---|---|---|
| Solar only, no battery | 16 kWh | 80c | 0 kWh | Around $290 in feed-in credits |
| Solar plus 10kWh battery | 6 kWh | 30c | 10 kWh (worth $3.80 at 38c) | Around $1,500 in avoided grid purchases plus feed-in |
| Solar plus 15kWh battery | 2 kWh | 10c | 14 kWh (worth $5.32 at 38c) | Around $1,980 in avoided grid purchases plus feed-in |
These are simplified figures that ignore seasonal variation and battery round-trip losses, but the direction is unmistakable. In a low-feed-in environment, storage captures roughly five times more value from the same solar than exporting does. That is exactly why the 10kW solar plus 28kWh battery package has become our most requested system for larger Adelaide homes.
Does the Low Feed-in Tariff Mean Solar Is No Longer Worth It in SA?
No, and this is the most common misunderstanding we hear at site assessments. The feed-in tariff was never the main source of value from a solar system. Self-consumption is. A household paying 38c per kWh that offsets 10 to 15 kWh a day with its own solar saves $1,400 to $2,000 a year before a single kilowatt-hour is exported. With federal STC rebates still applied upfront and the 2026 solar and battery rebates in South Australia stacking on top, most Adelaide systems still pay for themselves in four to seven years.
What has changed is the design brief. Ten years ago, the right answer was the largest system you could fit, because every exported kilowatt-hour earned a premium. In 2026, the right answer is a system sized to your actual daytime usage, wired battery-ready, with a plan to either add storage now or when the rebates make it compelling. Our solar sizing guide for South Australia explains how to match system size to your consumption rather than to your roof.
Frequently Asked Questions
What is the best solar feed-in tariff in South Australia in 2026?
The highest headline feed-in tariffs in South Australia in 2026 are generally in the 10c to 15c per kWh range, but almost all of them come with conditions such as a daily export cap, a higher usage rate, or a requirement to bundle other services. For most households, a mid-range plan paying 5c to 8c with a competitive usage rate delivers a lower total annual bill than a high-feed-in plan with expensive imports. Compare the whole plan, not the feed-in rate alone.
Is there a minimum feed-in tariff in South Australia?
No. South Australia does not have a legislated minimum feed-in tariff. ESCOSA stopped setting a minimum retailer rate several years ago, and since then every retailer has been free to set its own feed-in tariff, including zero. This is different from Victoria, where a minimum rate is still published each year. In SA, the only protection is competition, which is why it pays to check your rate at least once a year.
Why is my feed-in tariff so low?
Your feed-in tariff is low because South Australia now has so much rooftop solar that midday electricity is almost worthless on the wholesale market. Retailers pay you roughly what that electricity is worth to them, which at 1pm on a sunny day is very little. The value of solar has shifted from exporting to self-consumption and storage, which is why batteries are now central to the economics of solar in SA.
Will I have to pay to export solar in South Australia?
Under two-way network tariffs, a small charge can apply to solar exported during the midday oversupply window, but a free daily export threshold usually means typical households pay little or nothing. Whether you see it at all depends on how your retailer passes the network tariff through. The practical response is the same either way: use more of your own solar, and shift exports to the evening with a battery if you can.
Does a battery increase my feed-in tariff?
A battery does not change the rate you are paid, but it changes how much you need to export in the first place. Instead of selling midday solar for 5c, you store it and avoid buying evening electricity at 38c. Some retailers also offer higher feed-in rates or VPP payments specifically for battery owners who can export in the evening peak, which can lift the effective rate well above a standard plan.
Can I still get the 44c feed-in tariff in South Australia?
No. The South Australian premium feed-in scheme paying 44c per kWh closed to new applicants years ago. Households still on it keep the rate until the scheme ends, but upgrading or replacing the system, or moving house, generally ends eligibility. If you are on the legacy scheme, speak to an installer before making any changes to your system.
How much solar does a 6.6kW system export in Adelaide?
A north-facing 6.6kW system in Adelaide generates around 22 to 28 kWh on an average day. A typical household uses 8 to 12 kWh of that directly during daylight hours and exports the remaining 10 to 18 kWh. At a 5c feed-in tariff, that export is worth roughly $180 to $330 a year, compared with $1,100 to $1,650 a year saved by the electricity used directly. See our 6.6kW solar system for Adelaide page for full generation figures.
Get the Most Out of Your Solar in South Australia
Peace Electrical and Solar is an SAA-accredited, Adelaide-based installer with an in-house team of licensed electricians. We design every system around your actual usage, your feed-in tariff, and the 2026 rebates, so you are not paying for export capacity that earns you 5c. Every system we install is wired battery-ready, and we handle the STC, SA Home Battery Scheme and federal battery rebate paperwork at no extra charge.
Feed-in tariff figures in this article reflect the South Australian market in 2026 and are indicative only. Rates change regularly and vary by retailer, plan and postcode. Check your retailer’s current Energy Price Fact Sheet before making decisions. Savings estimates assume a retail rate of approximately 38c per kWh and typical Adelaide generation.
